年产500 t青钱柳粗多糖的工厂设计
摘要:青钱柳作为中国特色活性植物,是一种多用途的经济树种,具有极高的利用价值,主要分布于长江以南的各地区。目前研究发现,青钱柳的主要化学成分为三萜类、黄酮类、多糖类等多种化合物以及一些无机元素等。多项研究表明青钱柳具有降血糖、降血压、降血脂、抗氧化、抗衰老、提高免疫力等多重功效。尤其以其显著的调节血糖、激活胰岛器官和促进血糖代谢功效被誉为“降糖茶”。实验表明多糖的超声波微波协同提取最佳工艺条件为:超声功率360 w,微波功率100 w处理时间20 min,能将多糖的得率提高至10.02%。本文综述了青钱柳的功能成分、生理活性、多糖的提取以及开发现状,并对以青钱柳多糖为主的产品研发进行了展望。
关键词:青钱柳,生物活性,多糖,提取
Abstract:As the active plant with Chinese characteristics, Cyclocarya paliurus is a multi-purpose economic tree species with high utilization value, which is mainly distributed in regions south of Yangtze river. The present studies show that mainly chemical compounds of Cyclocarya paliurus are terpenoids, flavonoids, polysaccharides and some inorganic elements. Quantities of studies have revealed that Cyclocarya paliurus gained many biological effects, such as hypoglycemic action, antihypertensive action, antilipid-lowering action, antioxidant action, antiaging action, improving immunity, ect. Cyclocarya paliurus was knowned as lsquo;the magic tea with hypoglycemic actionrsquo;, especially according to its function of regulating the blood of sugar, activating islet organs and promoting blood glucose metabolism. The optimum condition of the combined use of ultrasonic and microwave has been experimentalized: ultrasonic power 360 w, microwave power 100 w, treatment time 20 min, which could make the yield extraction of polysaccharides up to 10.02%. This article sums up functional composition of Cyclocarya paliurus biological activity, and present situation of development of polysaccharides. Simultaneously, we also take a brief perspective on the products based on polysaccharides of Cyclocarya paliurus.
Key words:Cyclocarya paliurus, Biological activity, Polysaccharides, Extraction
1.青钱柳的简介
青钱柳(Cyclocarya paliurus)是冰川世纪时期存下来的珍贵树种,是我国特有单种属珍稀药食同源的植物,属于国家二级保护树种。青钱柳是一种高大速生阔叶乔木,因其树形似柳,果实圆形似铜钱,色青而下垂,故名“青钱柳”。因其果实似铜钱,叶片具有甜味,又名摇钱树、甜茶树[1][1]。
青钱柳产于长江以南,广泛分布于我国长江以南各省区的山区、溪谷或石灰岩山地,南至华南,东达台湾,西至西南。多生于海拔420~2500 m的山区或石灰岩山地,主要分布在安徽、江西、江苏、浙江、湖北等地[2][2]。
现代研究表明,青钱柳叶中含有多糖、黄酮、三萜类、蛋白质、矿物质、酚酸类、维生素、皂苷等多种重要的功能性物质。其中发挥主要功效的是有机成分中的黄酮、多糖、三萜类物质。黄酮类物质具有抗癌、抗肿瘤、防衰老、预防心脑血管疾病、调节机体免疫等功效[3][3],多糖类物质具有抗氧化[4][4]、降血糖[5][5]、降血脂[6][6]等功效;三萜类物质具有提高免疫力、降糖、抗病毒、抗癌、抗炎和预防心脑血管疾病等功效[7][7]。
目前,青钱柳因其重要的保健功能和药效作用而受到重视,市场需求量不断扩大,资源的人工栽培也随之迅速发展。青钱柳作为中国独有特色植物,因其认可的生理活性价值以及良好的发展前景成为当今研究的热点,具有重要的研究价值和广阔的发展空间。
以上是毕业论文文献综述,课题毕业论文、任务书、外文翻译、程序设计、图纸设计等资料可联系客服协助查找。